— Short, snippet-friendly answers to the most-asked questions about St John's wort (Hypericum perforatum). For the full profile with citations, open the main page.
St John's wort (Hypericum perforatum) belongs to the family Hypericaceae and is native to regions including Afghanistan, Albania, Algeria, and parts of Europe such as Austria and the Baltic States. St John's wort (Latin: Hypericum perforatum, family Hypericaceae) is a medicinal plant catalogued in PlantSage.
St John's wort is most often used to support mood support and stress & anxiety. Each claim is rated by evidence strength — see the full profile for citations.
St John's wort should be used with caution by photosensitivity and pregnancy. Always consult a clinician before using any herbal preparation — especially during pregnancy, breastfeeding, while on medication, or for children.
St John's wort is most commonly prepared as tincture, capsule, or tea. Dosage and method depend on the form — see the full profile for ranges and preparation steps.
St John's wort is a member of the Hypericaceae family native to AFG, ALB, ALG, ALT, AUT, and AZO. St John's wort thrives in full sun to partial shade and prefers well-draining soil.
St John's wort has 5 documented contraindications (severities: warning and contraindication). Most commonly: avoid concurrent use with sedatives, alcohol, or medications affecting the same pathway. Always consult a qualified clinician.
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